I have a metamodel that references several other metamodels. I want to evolve the metamodel to a new version. This works with a simple metamodel, i.e. one containing no references to other metamodels. But it breaks when I try to migrate models based on complex metamodels, i.e. ones with dependencies.

Let's assume the simplest possible case: The only change is to the NSURI, so I have an empty Flock file.